Home / 81,686.20-122,529.30-68,564.20

Finding the Fourth Proportional to 81,686.20, 122,529.30 and 68,564.20

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Solution

The fourth proportional to 81,686.20, 122,529.30 and 68,564.20 is: 102,846.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,686.20 : 122,529.30 = 68,564.20 : x
  2. Step 2: Convert to fraction form
    81,686.20/122,529.30 = 68,564.20/x
  3. Step 3: Cross multiply
    81,686.20x = 122,529.30 × 68,564.20
  4. Step 4: Simplify right side
    81,686.20x = 8,401,123,431.06
  5. Step 5: Solve for x
    x = 8,401,123,431.06/81,686.20
  6. Step 6: Final answer
    x = 102,846.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.